isastream(3c) [hpux man page]

isastream(3C)															     isastream(3C)

NAME

       isastream() - determine if a file descriptor refers to a STREAMS device or STREAMS-based pipe

SYNOPSIS

DESCRIPTION

       The function tests whether an open file descriptor (fd) corresponds to a STREAMS device or STREAMS-based pipe.

RETURN VALUE

       Upon successful completion, the function returns a value of 1 when the file descriptor of the open file specified by fd is a STREAMS device
       or STREAMS-based pipe, and 0 (zero) if it is not a stream, but is a valid open file descriptor.	Otherwise, a value of -1 is returned,  and
       is set to indicate the error.

ERRORS

       If any of the following conditions occur, the function sets to the corresponding value:

       [EBADF]	      The specified file descriptor does not refer to a valid open file.

SEE ALSO

       fattach(3C), fdetach(3C), streamio(7).

STANDARDS COMPLIANCE

																     isastream(3C)

isastream(3C)                                              Standard C Library Functions                                              isastream(3C)

NAME

       isastream - test a file descriptor

SYNOPSIS

       #include <stropts.h>

       int isastream(int fildes);

DESCRIPTION

       The  isastream() function determines if a file descriptor represents a STREAMS file. The fildes argument refers to an open file descriptor.

RETURN VALUES

       Upon  successful  completion, isastream() returns 1 if fildes represents a STREAMS file, and 0 if it does not.  Otherwise, -1 is return and
       errno is set to indicate the error.

ERRORS

       The isastream() function will fail if:

       EBADF           The fildes argument is not a valid file descriptor.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Standard                     |
       +-----------------------------+-----------------------------+
       |MT-Level                     |MT-Safe                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5), , standards(5), streamio(7I)

       STREAMS Programming Guide

SunOS 5.10                                                          24 Jul 2002                                                      isastream(3C)